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17926 Jameswu (1999 GA18)
Classification: Main-belt Asteroid          SPK-ID: 2017926
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0999751686832421 2.9345e-08  
a 2.200168589172797 7.1403e-09 au
q 1.980206363338676 6.3206e-08 au
i 4.321090205611352 3.522e-06 deg
node 16.77842349879027 5.0217e-05 deg
peri 230.3292300652563 5.4904e-05 deg
M 180.9676184018231 2.3966e-05 deg
tp 2459793.304450271315
(2022-Aug-01.80445027)
8.0325e-05 TDB
period 1192.016774801405
3.26
5.8028e-06
1.589e-08
d
yr
n .302009172698075 1.4702e-09 deg/d
Q 2.420130815006919 7.8542e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1766  
   data-arc span      9102 days (24.92 yr)  
   first obs. used      1996-03-24  
   last obs. used      2021-02-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5047  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:17:49  

Additional Information
 Earth MOID = .968674 au 
 Jupiter MOID = 2.59262 au 
 T_jup = 3.655 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.76   n/a MPCxxxxx  
diameter diameter 3.307 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 5.343 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.177   0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17926 Jameswu           Discovered 1999 Apr. 15 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
James YW Wu (b. 1987) was awarded third place in the 2003 Intel International Science and Engineering Fair for his zoology team project. He attends the Keystone School, San Antonio, Texas, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

Alternate Designations
 1999 GA18 = 2000 QK142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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